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A. M. Sirunyan; J. Erö; J. D’Hondt; C. Delaere; G. A. Alves; E. M. Da Costa; C. Mora Herrera; W. L. Prado Da Silva; M. Misheva; E. Locci; G. Bourgatte; A.-C. Le Bihan; Sa. Jain; D. Eckstein; T. Lenz; W. Lohmann; A. Benecke; J. Lange; U. Husemann; S. Kudella; C. Wöhrmann; G. Daskalakis; V. Veszpremi; G. Vesztergombi; Z. L. Trocsanyi; M. Kaur; A. K. Virdi; S. Bhattacharya; M. Maity; P. Shukla; S. Karmakar; K. Kothekar; M. Khakzad; F. Rezaei Hosseinabadi; G. Masetti; A. Benaglia; P. Dini; S. Malvezzi; T. Dorigo; F. Simonetto; P. Salvini; A. Santocchia; R. Castaldi; G. Mandorli; A. Rizzi; S. Argiro; T. J. Kim; U. K. Yang; Z. A. Ibrahim; C. Uribe Estrada; Q. Hassan; M. Kazana; P. Zalewski; M. Walczak; P. Faccioli; N. Leonardo; A. Lanev; V. Perelygin; A. Dermenev; M. Cepeda; M. Cerrada; M. Bianco; D. Gigi; C. Lourenço; S. Nourbakhsh; S. Orfanelli; E. Perez; M. Peruzzi; B. Kilminster; Y. Takahashi; A. Cakir; V. J. Smith; D. Petyt; A. Martelli; K. Uchida; A. Morton; R. Bartek; S. Girgis; D. Zou; P. T. Cox; G. Funk; J. W. Gary; M. Citron; K. Pedro; L. Taylor; X. Zuo; S. Hagopian; M. Hohlmann; N. Varelas; A. Cocoros; C. Lindsey; C. Roland; J. G. Acosta; G. Alverson; D. Wood; N. Haubrich; J. Dolen; R. Montalvo; A. Safonov; R. Loveless
The European physical journal. C, Particles and fields, 01/2020, Letnik: 80, Številka: 1Journal Article
Abstract A search for $$\text {W}\text {W}$$ WW production from double-parton scattering processes using same-charge electron-muon and dimuon events is reported, based on proton-proton collision data collected at a center-of-mass energy of $$13\,\text {TeV} $$ 13TeV . The analyzed data set corresponds to an integrated luminosity of $$77.4{\,\text {fb}^{-1}} $$ 77.4fb-1 , collected using the CMS detector at the LHC in 2016 and 2017. Multivariate classifiers are used to discriminate between the signal and the dominant background processes. A maximum likelihood fit is performed to extract the signal cross section. This leads to the first evidence for $$\text {W}\text {W}$$ WW production via double-parton scattering, with a significance of 3.9 standard deviations. The measured inclusive cross section is $$1.41\pm 0.28\,\text {(stat)} \pm 0.28\,\text {(syst)} \,\text {pb} $$ 1.41±0.28(stat)±0.28(syst)pb .
